Jaulny Viaduct, French bridge

The Jaulny Viaduct is a reinforced concrete railway bridge that stretches across the Rupt de Mad valley for 480 meters at a height of about 50 meters (164 feet). The structure features a box girder design supported by six sturdy pillars spaced approximately 80 meters apart, creating a balanced and clean appearance.

The viaduct was built as part of the high-speed LGV Est railway line and opened for service in June 2007 to carry trains across the Rupt de Mad valley. Architects Fabrice Neel and Brigit de Kosmi designed the structure to blend with its natural surroundings while efficiently supporting rail traffic.

The viaduct crosses the Rupt de Mad valley, a ZNIEFF-listed natural zone, and passes over the old Lérouville–Metz railway line. It stands within the Lorraine Regional Natural Park and near the Château de Jaulny, a listed monument. Its name comes from the village of Jaulny, on the Thiaucourt-Regniéville side of the valley.

The best views of the viaduct are from the valley or surrounding areas, as the structure itself is not open to pedestrian access. The location is in a rural setting and easily accessible from Thiaucourt-Regniéville.

The special double pier is not a pile foundation: it is a twin-shaft pier built to absorb the forces of a possible emergency braking by a train. It is one of the six reinforced concrete piers, each 50 m high, that carry the 480 m deck.